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post #3 of Old 10-05-2012
JimsCAL
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Re: Universal M12 Fuel Pump

A diesel has two fuel pumps. The high pressure injection pump whick supplies the injectors with fuel and a low pressure pump which supplies fuel from the tank to the inlet of the injection pump. The low pressure pump can be either electric or mechanical. Note that if the fuel tank was located above the injection pump, the head could be enough to supply fuel to the injection pump without a low pressure pump.
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